In Stanley Kubrick's Eyes Wide Shut (1999), the chanting at the mansion party means "God says to his followers: A new commandment I give to you" (The original in Romanian reads: "Zis-a Doamne catre ucenicii sai: Porunca noua dau voua").
There are 2 reasons for it's incomprehensibility:
- It is in a foreign language (Romanian)
- The vocal track is run in REVERSE.
From EWS IMDB FAQ.